EDF is designed for engines with 28mm diameter,limit: 65000 RPM Made of carbon composite, balanced.
Attachement of the motor is allowing great cooling (motor is with a direct contact with circulating air) . Thurst is over 1 kg (despite of high speed air circulation).

I read somewhere that there is a low efficiency of an EDF comparing to a propeller. Well if you are hovering than yes. But with higher speed,
efficiency of an EDF grows comparing to a propeller which is losing it. So depends on how fast you want to fly.